United Continental Holdings Inc (NYSE: UAL), which makes up 0.53% of the Vanguard Mid-Cap Value ETF (VOE), has seen 6 directors and officers purchase shares in the past six months, according to the recent Form 4 data. The ETF holds a total of $9,982,020 worth of UAL, making it the #48 largest holding. The table below details the recent insider buying activity observed at UAL:

And Windstream Corp (NASD: WIN), the #58 largest holding among components of the Vanguard Mid-Cap Value ETF (VOE), shows 9 directors and officers as recently filing Form 4's indicating purchases. The ETF holds $9,151,158 worth of WIN, which represents approximately 0.49% of the ETF's total assets at last check. The recent insider buying activity observed at WIN is detailed in the table below: